Wake up refreshed at 9:09 AM
Plan your bedtime to wake up at 9:09 AM. This sleep calculator uses 90-minute sleep cycles and takes 15 minutes to fall asleep into account. Adults: 7-9 hrs, Teenagers: 8-10 hrs, Children: 9-11 hrs, Elderly: 7-8 hrs.
- 6 cycles11:54 PM9 hrs
- 5 cycles1:24 AM7.5 hrs
- 4 cycles2:54 AM6 hrs
- 3 cycles4:24 AM4.5 hrs
- 2 cycles5:54 AM3 hrs
- 1 cycles7:24 AM1.5 hrs
Suggested bedtimes (arrive in bed earlier to allow 15 minutes to fall asleep).
Tip: Sleep cycles average ~90 minutes. Aim for 4–6 full cycles (6–9 hrs).